Thank you all!
- after 'in recent times', an English sentence needs past tense, not present tense. By using 'I have been trying', you sort of convey that it may still be going on. Therefore, I will leave the translation as it is.
- 'I wouldn't be able to do it' feels like it should be followed by something like 'if I wanted to'. In this case, it is clear that the person does want to, so the original translation (I am not able to do so) sounds better.
I will accept this as it is. Thanks for your input!